Author Gregory Maguire, whose novel, "Wicked: The Life and Times of the Wicked Witch of the West," imagines the sympathetic backstory of the iconic "Wizard of Oz" character, and Stephen Schwartz, composer and lyricist of "Wicked," the Tony Award-winning musical adaptation of Maguire's book, will be in conversation with Courant theater critic Frank Rizzo. Tickets: $25 to $55, VIP $125. Information: